Exam 29: Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

If a compost pile is turned frequently and other conditions are adequate for aerobic digestion, the composting can be completed in

In sewage treatment, the removal of phosphates and nitrogen compounds is achieved during

Which would be more likely to cause illness: a water sample that tested positive for coliforms or one that tested positive for E. coli O157:H7?

Vibrio cholerae is most often associated with

Advanced treatment of sewage

Why does secondary treatment of wastewater require O₂?

The compost pile temperature at which pathogens, but not thermophiles, are killed is about 20-30ºC.

Synthetic compounds are most likely to be biodegradable if they

In treating an oil spill, why might biostimulation be preferred over bioaugmentation?

The accepted method of testing water supplies for the possible presence of pathogens is to determine the presence of

What is the advantage of removing phosphates and nitrates from wastewater?

The conversion of organic to inorganic matter is called co-metabolism.

Which statement does NOT apply to water treatment?

Which of the following is used to cause flocculation?

What is the purpose of grinding yard waste before putting it into composting piles?

Sludge

Select the pair that is INCORRECTLY matched.

The problem(s) with using sludge as a fertilizer is/are the

Why would soil and water be added to a compost pile?

Which of the following is a disadvantage of landfills?